SU1236474A2 - Control device - Google Patents

Abstract

The invention relates to digital automatic devices and data processing systems and can be used as control and operating computer machines and in automatic control systems. The purpose of the invention is to reduce the monitoring and diagnostics time. The control unit is a digital automaton with a memory of a sequential structure in which such transitions are provided so that the number of transitions from each state and transitions to it is the same. The device contains a group of elements OR, three groups of elements AND, two encoders, a decoder, elements of memory. 1 il.

Description

The invention relates to digital automatic, data processing devices and systems, can be used as control and operating computer automatic machines in automatic control systems and is an improvement of the known device according to the author. No. P66107

A device is known that contains the first, second, and third group of elements AND, a group of memory elements, the first encoder, a decoder, a group of OR elements, and the first inputs of the AND elements of the first group are connected to the corresponding outputs of the dengafector whose inputs are connected to the outputs of the memory elements of the group the inputs of which are connected to the first group of outputs of the first encoder, the second group of outputs of which is the group of outputs of the device, the information inputs of the device are connected to the first inputs of the corresponding IL elements Both groups and inverse inputs of the corresponding elements AND of the second group, the second inputs of the OR elements are connected to the input of the device operation mode, the outputs of the OR elements are connected to the direct inputs of the corresponding elements AND of the second group, the outputs of which are connected to the second inputs of the corresponding elements And the first group, the outputs of which are connected to the first inputs of the elements AND the third group, the outputs of which are connected to the corresponding inputs of the first encoder, the second inputs of the elements AND the third group image cosiness a group of inputs for setting the operation mode of the device t1.

A disadvantage of the known device is the substantial dependence of the time of test monitoring and diagnosis, as well as the complexity of their implementation, on the presence of transitions between states, since they determine the length of the test.

The chain of the invention is to shorten the monitoring and diagnosis time.

The goal is achieved by the fact that a fourth group of elements And and a second encoder are entered into the control unit, the first inputs: elements AND of the fourth group are connected to the corresponding outputs of the decoder, and the second inputs form the second group of mode setting inputs

five

0

five

0

five

0

five

0

five

operation of the device, the outputs of the elements And the fourth group are connected to the inputs of the second encoder, the outputs of which are connected to the second inputs of the memory elements.

The drawing shows a functional diagram of the control device.

The device contains information inputs 1, a group of 2 OR elements, a control input 3, a second group of 4 AND elements, a first group of 5 AND elements, a third group of 6 AND elements, a first group of 7 control inputs, a first encoder 8, a group of 9 memory elements the decoder 10, the group P of the device outputs, the second group of 12 control inputs, the fourth group of 13 elements And, the second encoder 1A, performed on a diode array.

The proposed control unit is a digital automaton with a memory of a sequential structure in which elements of the fourth group and the second encoder provide additional transitions such that the number of transitions from each state and transitions to it together with those implemented in the device are the same. Fulfillment of this condition provides verification of the implementation of all transitions and exits in the device without repeating. The equality at each vertex of the number of outgoing and incoming arcs of the automaton graph corresponding to this condition is a necessary and sufficient condition for the presence of the Euler contour E of the automaton graph, i.e. such a bypass route, in which each arc is run only once. The test corresponding to the Euler circuit has a minimum length compared to any other test that provides control in the case of unspecified malfunctions (i.e., any malfunctions).

The device can be in one of two modes: work or control. In the operation mode, a single potential is applied to all inputs 7 of the setting of the operation mode, and a zero potential is applied to the control input 3 and the second inputs 12 of the setting mode, and for the operation of the device.

In the control mode, the potentials are removed from all inputs 7 and 2 of the setting of the device operation mode and a single potential is applied to the control input 3. At the same time, at the input of all elements AND of the second group 4, if they are in good condition, there appear signals of a single level that prepare All elements of the first group 5 are put to work. After that, the corresponding inputs 7 and 12 of the device's mode of operation are given a single-level signal in the sequence determined by the sequence of sets in the test initiating all transitions t implemented in the device Only once.

If any element AND of the second group A is faulty, then the corresponding element AND of the first group 5 is closed.

 When a single signal is applied to the second input of the corresponding element AND of the third group 6 according to the input 7, the device's mode of operation at its output does not ruin the single signal and, therefore, the device will not switch to the required device or generate the output signal

The occurrence of a malfunction in other elements of the device is also detected, since a single signal arriving at the corresponding input 7 of the setting of the operating mode determines the corresponding tesU-l

Editor G. Volkova

Compiled by Sirotsk

Tehred M. Khodanich Proof-reader V. But ha

647А4

tovoy set. Transitions in the device, carried out when a single potential is applied to the inputs 12 of the task. The operation mode using the encoder 14 is ancillary and serves to reduce the total number of sets in the test, ensuring that all transitions and outputs are checked for correctness. Due to this, JO simplifies the single-level signal distributor to the inputs 7 and I2 of the device operation mode setting by no less than 6 times and reduces the total monitoring and diagnostics time.

Claims (1)

Invention Formula Control device auth.St. No. P66107, characterized in that, in order to reduce the monitoring and diagnostics time, a fourth group of And elements and a second encoder are introduced into it, the first inputs of the And elements of the fourth group are connected to the corresponding outputs of the decoder, and the second inputs form the second group of operation mode inputs the devices, the outputs of the elements And the fourth group are connected to the inputs of the second encoder, the outputs of which are connected to the second inputs of the memory elements. Order 3091/51 Circulation 671 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Design, 4. Subscription